You can probably find the Corona if you have a Northern Tool (where several of us bought ours last year) or at a food store that sells wheat. Lots of people (well, not lots, but many health/hippy types) buy whole wheat and use Corona type mills to crack it, so those types of stores frequently carry them.

If you're into "do-it-yourself" homebrew projects why don't you visit some local dairies and see if they have any old stainless steel dairy equipment laying about that they'd be willing to sell cheap (or maybe give you free). There's lots of overlap in dairy/brewery equipment, like tanks, kettles, whirlpools, etc. You could easily adapt this stuff into one kick-a$$ home brewery. Of course you'd have to brew 100 gallon batches.
Jeff

Just thought of another NON-LHBS source for stuff. See if you have any restaurant supply stores in your vicinity. They definitely have SS pots, big wooden paddles and such. May even have used equipment real cheap.
Jeff